2T Cast Piston Ø 55,97 mm for Athena Standard Bore Cylinder Kit and OE Cylinder

Athena, leader in motorcycle spare parts for over 40 years, offers a complete range of cast pistons for the main 2 and 4-stroke Street and Off-road motorcycle models. Produced with state-of-the-art numerical control machines (CNC), which ensure production dimensional tolerances of less than 0.01 mm, Athena pistons are made of a special high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, while at the same time providing greater resistance and excellent performance. The perfectly smooth profiles thus ensure a regular flow and ideal propagation of the flame front. The piston skirt is lighter for maximum performance and the surface has been coated with Molybdenum Disulfide to reduce friction, lessen noise, and improve sliding of the pistons. To ensure constant and effective lubrication of the needle roller cage bearing and the connecting rod small end shims (spacers) in all conditions, Athena technicians have designed a window, produced with CNC cutting-edge machining tools, on the intake side of the piston skirt; on the exhaust side, the skirt features holes for the lubrication of the exhaust crossbar. The included piston rings are made in Japan from a special steel and feature a chromium nitride coating applied using a PVD process, ensuring low friction, smoother sliding of the pistons, and a longer lifespan. The piston pin is biconical for greater strength and lightness and is made of a nitride-treated aeronautical steel alloy to guarantee maximum hardness and minimal friction.